[Healeys] 100 engine prices

Bob Spidell bspidell at comcast.net
Thu May 9 10:08:25 MDT 2013


While we're on the topic ... 

I know the 100 heads are notorious for (at least) leaking between #2 and #3 cylinders--is this where they crack? Or, can you get a crack between intake and exhaust valves, or ...? 

What are the symptoms of a cracked head? 

Bob 


-------------------------------- 
Bob Spidell - San Jose, CA 

----- Original Message -----


The 100 cylinder head is so prone to cracks that we will rarely try 
to fix them any more. The problem is you will chase the cracks around 
the head for ever. 

The best answer is to just bight the bullet and install an aluminium 
head. Yes i know they are $$$$$$ but they are far superior, flow 
better, lighter, will not crack and run cooler. 

I have probably 25 cast heads and would be lucky to find one the isnt 
cracked. If i did once you rebuild that head correctly you got a lot 
wrapped in a ancient design head. 
Clean and Mag head, surface, repair and minor cracks, install new 
seats, guides, valves, springs, grind seats, and next thing you know 
you have about $800.00 to $900.00 in a head 
that is just going to crack again. 

Also remember that the head studs will stretch and the old copper 
style head gaskets leak. So you should also install the upgraded 
studs and head gasket. 



David Nock 
British Car Specialists 
Stockton Ca 95205 
209-948-8767 

www.britishcarspecialists.com 

o?< 


Please feel free to view an interview with the Nock's in 2009 
Enjoy 
www.youtube.com/watch?v=QOTTRYkbQzs 


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